HDNet is about to "Premiere" a new High-Definition version of the classic 80's hit Tron in just a few minutes - This is likely to be the same HD version being prepped for a future Blu release in order to promote the upcoming TRON Legacy sequel

I just scanned through it a bit. It is definitely brighter than I remember. The last time I saw it the red "programs" were pinkish and the blue "programs" were a washed out blue. To me it looks a lot better and if the Blu-ray is at least this good I'll be happy.

if the BD is not at least as good as the HDnet broadcast then it will be due to some big failure in the transfer process, right? nothing else?

It would almost have to be. I hope whoever handles it keeps their mitts of the DNR dial. I don't want to say I was blown away yet, because I only watched a total of 10-15 minutes total. But it definitely looked very good from what I saw. The scene where Sark was in the lightcycle grid at the beginning has never looked better IMO.